Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing water-based polyamide thixotropic anti-settling agent

A thixotropic anti-settling agent, polyamide technology, applied in coatings and other directions, can solve the problems that coatings cannot be used in water-based systems, transparent coatings are opaque, coating product defects, etc., and achieve a balance between sag resistance and leveling. Good product quality and excellent thickening effect

Active Publication Date: 2015-03-11
江西省龙海化工有限公司
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unless the required temperature is difficult to control and the process is complex, once the temperature is too high or too low, the finished coating system will produce particles, resulting in coating product defects
As a result, matting and opacity appear in the prepared transparent coatings, and these coatings cannot be used in water-based systems, and the application range is limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 20 g of citric acid, 80 g of adipic acid, 62 g of decanediamine, and 50 g of lauryl hydroxystearic acid into a vacuum oven, and dry at 60° C. for 12 hours. Add the dried raw material into a three-necked flask, add 150mL of N-methylpyrrolidone as a solvent into the flask, prepolymerize at 80°C for 1 hour, then raise the temperature to 110°C, add 12mL of triphenyl phosphite, and react for 0.5h Afterwards, heat up to 125°C, react for 2 hours, cool, add 10.3g maleic anhydride and 3g pyridine, stir and heat to 80°C and react for 2 hours to obtain acidified water-based polyamide resin; then add 7g triethanolamine to carry out Neutralize to get the product.

Embodiment 2

[0026] 80g of malic acid, 60g of isophthalic acid, 39.6g of hexamethylenediamine, and dimethylolpropionic acid were put into a vacuum oven and dried at 60°C for 12 hours. Put the dried raw material into a three-necked flask, add 150mL of N-methylpyrrolidone into the flask as a solvent, pre-polymerize at 70°C for 2 hours, raise the temperature to 150°C, add 12mL of triphenyl phosphite, and react for 2 hours , Cool, add 52. 1g of phthalic anhydride and 3g of pyridine, stir and heat to 80°C and react for 2 hours, add 20g of ethanolamine to obtain a water-based polyamide thixotropic anti-settling agent.

Embodiment 3

[0028] Put 15 g of malic acid, 60 g of adipic acid, 39 g of 1,7-heptanediamine, and 20 g of lauryl hydroxystearic acid into a vacuum oven, and dry at 60° C. for 12 hours. Put the dried raw material into a three-necked flask, add 150mL of N-methylpyrrolidone into the flask as a solvent, prepolymerize at 100°C for 1 hour, then raise the temperature to 150°C, add 12mL of phenyl hypophosphorous acid, and react for 2 hours. Cool, add 12g of maleic acid and 3g of dimethylaminopyridine, stir and heat to 60°C and react for 2 hours, then add 5g of potassium hydroxide to obtain the water-based polyamide thixotropic anti-sedimentation agent.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of chemical ink coatings, in particular to a method for preparing a water-based polyamide thixotropic anti-settling agent. The method comprises the following steps: 1, co-polymerizing binary acid, an organic acid with hydroxyl and diamine to obtain a co-polymerized polyamide prepolymer with hydroxyl; 2, performing acidation in the way that the co-polymerized polyamide prepolymer with hydroxyl and an acidifier are subject to binary copolymerization reaction to obtain polyamide with carboxyl; 3, realizing neutralization of polyamide with carboxyl and alkali to obtain the water-based polyamide thixotropic anti-settling agent. The method is simple and is low in raw material cost; the prepared water-based polyamide is simple in process and good in product quality; the anti-sagging and leveling properties of a film when mainly used as an anti-settling agent of a coating can be better balanced; the coating system is endowed with higher thixotropy; favorable thickening and anti-settling functions are achieved; fillers and pigments in the coating are effectively prevented from sedimentation; the method can be extensively applied to the water-based system coating and has a wide application range.

Description

technical field [0001] The invention relates to the field of chemical ink coatings, in particular to a preparation method of a water-based polyamide thixotropic anti-sedimentation agent. Background technique [0002] In the prior art, in order to control the rheology of the liquid system, for example, silicon dioxide, hydrogenated castor oil, organically modified bentonite and polyamide wax are generally used. In the field of polyamides and polyamide esters, there are a large number of patents, such as DE 69523221, EP 0239419, US 5510452l and so on. Also modified bentonites in combination with polyamides are used as described in EP 0509202 and DE 69704691. [0003] The above technologies are usually powders or pastes, however powders or pastes must be transformed into semi-finished products using solvents and applying shear forces, or introduced into liquid coating systems using special temperature control. Unless the required temperature is difficult to control and the pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48C09D7/02C09D7/45
Inventor 董清龙巴于磊
Owner 江西省龙海化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com